webtalk: work around misfeature in lws_config.h
webtalk: work around misfeature in lws_config.h

    libwebsockets includes its private configure #defines in this header
    since f1b12544

strahlex/machinekit,strahlex/machinekit,strahlex/machinekit,strahlex/machinekit,strahlex/machinekit,strahlex/machinekit,strahlex/machinekit